./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:03:51,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:03:51,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:03:51,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:03:51,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:03:51,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:03:51,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:03:51,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:03:51,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:03:51,115 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:03:51,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:03:51,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:03:51,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:03:51,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:03:51,118 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:03:51,118 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:03:51,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:03:51,118 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:03:51,119 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:03:51,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:03:51,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:03:51,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:03:51,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:03:51,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:03:51,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:03:51,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:03:51,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:03:51,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:51,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:03:51,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:03:51,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:03:51,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:03:51,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:03:51,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:03:51,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:03:51,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:03:51,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:03:51,125 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:03:51,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:03:51,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:03:51,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:03:51,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:03:51,341 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:03:51,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-17 19:03:52,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:03:52,803 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:03:52,804 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-17 19:03:52,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/dbe3fbd27/37efe156548e47329a5f7dbc3b95775f/FLAGf83c390ec [2024-09-17 19:03:53,228 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/dbe3fbd27/37efe156548e47329a5f7dbc3b95775f [2024-09-17 19:03:53,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:03:53,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:03:53,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:53,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:03:53,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:03:53,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382b61b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53, skipping insertion in model container [2024-09-17 19:03:53,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:03:53,429 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-17 19:03:53,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:53,456 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:03:53,468 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-17 19:03:53,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:53,487 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:03:53,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53 WrapperNode [2024-09-17 19:03:53,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:53,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:53,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:03:53,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:03:53,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,504 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:03:53,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:53,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:03:53,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:03:53,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:03:53,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,521 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-17 19:03:53,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:03:53,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:03:53,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:03:53,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:03:53,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (1/1) ... [2024-09-17 19:03:53,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:53,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:53,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 19:03:53,574 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 19:03:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:03:53,617 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:03:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:03:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:03:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:03:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:03:53,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-17 19:03:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:03:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:03:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:03:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:03:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:03:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:03:53,670 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:03:53,673 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:03:53,795 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:03:53,796 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:03:53,810 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:03:53,810 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 19:03:53,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:53 BoogieIcfgContainer [2024-09-17 19:03:53,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:03:53,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:03:53,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:03:53,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:03:53,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:03:53" (1/3) ... [2024-09-17 19:03:53,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49643a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:53, skipping insertion in model container [2024-09-17 19:03:53,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:53" (2/3) ... [2024-09-17 19:03:53,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49643a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:53, skipping insertion in model container [2024-09-17 19:03:53,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:53" (3/3) ... [2024-09-17 19:03:53,820 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2024-09-17 19:03:53,833 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:03:53,833 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:03:53,880 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:03:53,884 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@647c76a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:03:53,884 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:03:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:03:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 19:03:53,891 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:53,892 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:53,892 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-17 19:03:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802260982] [2024-09-17 19:03:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:54,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:54,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802260982] [2024-09-17 19:03:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802260982] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:54,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:03:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646315138] [2024-09-17 19:03:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:54,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:03:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:54,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:03:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:54,042 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:54,077 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-17 19:03:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:03:54,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-17 19:03:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:54,088 INFO L225 Difference]: With dead ends: 58 [2024-09-17 19:03:54,089 INFO L226 Difference]: Without dead ends: 29 [2024-09-17 19:03:54,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:54,096 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:54,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-17 19:03:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-17 19:03:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-17 19:03:54,130 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-17 19:03:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:54,130 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-17 19:03:54,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:54,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-17 19:03:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 19:03:54,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:54,131 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:54,132 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:03:54,132 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:54,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-17 19:03:54,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:54,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825232721] [2024-09-17 19:03:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825232721] [2024-09-17 19:03:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825232721] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:54,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965470753] [2024-09-17 19:03:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:54,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:54,271 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:54,314 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-17 19:03:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:54,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-17 19:03:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:54,315 INFO L225 Difference]: With dead ends: 42 [2024-09-17 19:03:54,315 INFO L226 Difference]: Without dead ends: 40 [2024-09-17 19:03:54,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:54,317 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:54,317 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-17 19:03:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-17 19:03:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-17 19:03:54,326 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-17 19:03:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:54,326 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-17 19:03:54,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:54,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-17 19:03:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:03:54,328 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:54,328 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:54,328 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:03:54,328 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:54,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-17 19:03:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295584222] [2024-09-17 19:03:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295584222] [2024-09-17 19:03:54,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295584222] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129662543] [2024-09-17 19:03:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:54,415 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:54,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:54,416 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:03:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:54,457 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-17 19:03:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:54,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-17 19:03:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:54,459 INFO L225 Difference]: With dead ends: 46 [2024-09-17 19:03:54,459 INFO L226 Difference]: Without dead ends: 44 [2024-09-17 19:03:54,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:54,460 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:54,460 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-17 19:03:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-17 19:03:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-17 19:03:54,467 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-17 19:03:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:54,468 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-17 19:03:54,468 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:03:54,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-17 19:03:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-17 19:03:54,469 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:54,469 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:54,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:03:54,469 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:54,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-17 19:03:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:54,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086070981] [2024-09-17 19:03:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:54,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84959260] [2024-09-17 19:03:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:54,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:54,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:54,486 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:03:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 19:03:54,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:03:54,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:03:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086070981] [2024-09-17 19:03:54,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84959260] [2024-09-17 19:03:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84959260] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996760160] [2024-09-17 19:03:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:54,620 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:54,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:54,620 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:54,665 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-17 19:03:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-17 19:03:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:54,666 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:03:54,667 INFO L226 Difference]: Without dead ends: 50 [2024-09-17 19:03:54,667 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:54,668 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:54,668 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:54,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-17 19:03:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-17 19:03:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 19:03:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-17 19:03:54,675 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-17 19:03:54,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:54,675 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-17 19:03:54,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:54,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,676 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-17 19:03:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-17 19:03:54,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:54,677 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:54,694 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:03:54,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:54,881 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:54,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-17 19:03:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:54,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961862311] [2024-09-17 19:03:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843068569] [2024-09-17 19:03:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:54,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:54,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:54,905 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:03:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:54,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:03:54,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:54,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:03:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961862311] [2024-09-17 19:03:55,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843068569] [2024-09-17 19:03:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843068569] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115652274] [2024-09-17 19:03:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:55,001 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:55,002 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:55,065 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-17 19:03:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:55,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-17 19:03:55,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:55,066 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:03:55,066 INFO L226 Difference]: Without dead ends: 61 [2024-09-17 19:03:55,066 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:55,067 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:55,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-17 19:03:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-17 19:03:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:03:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-17 19:03:55,078 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-17 19:03:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:55,078 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-17 19:03:55,078 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:55,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-17 19:03:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-17 19:03:55,080 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:55,080 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:55,093 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:03:55,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:55,281 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:55,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-17 19:03:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792367076] [2024-09-17 19:03:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:55,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:55,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211410048] [2024-09-17 19:03:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:55,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:55,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:55,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:55,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:03:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 19:03:55,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 19:03:55,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-17 19:03:55,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:55,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792367076] [2024-09-17 19:03:55,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:55,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211410048] [2024-09-17 19:03:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211410048] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:55,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:03:55,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-17 19:03:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346676467] [2024-09-17 19:03:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:55,519 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:55,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:03:55,520 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:55,563 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-17 19:03:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:55,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-17 19:03:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:55,565 INFO L225 Difference]: With dead ends: 70 [2024-09-17 19:03:55,565 INFO L226 Difference]: Without dead ends: 68 [2024-09-17 19:03:55,565 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:03:55,566 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:55,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-17 19:03:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-17 19:03:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 19:03:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-17 19:03:55,577 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-17 19:03:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:55,577 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-17 19:03:55,577 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:55,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-17 19:03:55,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-17 19:03:55,578 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:55,579 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:55,595 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:03:55,782 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:03:55,783 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:55,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-17 19:03:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316893228] [2024-09-17 19:03:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:03:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:03:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:03:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:03:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 19:03:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 19:03:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316893228] [2024-09-17 19:03:55,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316893228] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:55,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:55,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:55,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069695208] [2024-09-17 19:03:55,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:55,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:55,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:55,928 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 19:03:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:55,986 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-17 19:03:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-17 19:03:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:55,987 INFO L225 Difference]: With dead ends: 75 [2024-09-17 19:03:55,988 INFO L226 Difference]: Without dead ends: 63 [2024-09-17 19:03:55,989 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:55,989 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:55,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-17 19:03:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-17 19:03:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:03:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-17 19:03:56,007 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-17 19:03:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:56,008 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-17 19:03:56,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 19:03:56,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-17 19:03:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-17 19:03:56,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:56,009 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:56,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-17 19:03:56,009 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:56,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-17 19:03:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802190252] [2024-09-17 19:03:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:56,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87985359] [2024-09-17 19:03:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:56,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:56,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:56,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:56,047 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:03:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:56,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-17 19:03:56,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-17 19:03:56,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-17 19:03:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:57,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802190252] [2024-09-17 19:03:57,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:57,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87985359] [2024-09-17 19:03:57,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87985359] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:57,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:57,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-17 19:03:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727360507] [2024-09-17 19:03:57,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:57,478 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 19:03:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 19:03:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:03:57,480 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:03:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:57,940 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-17 19:03:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:03:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-17 19:03:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:57,942 INFO L225 Difference]: With dead ends: 138 [2024-09-17 19:03:57,942 INFO L226 Difference]: Without dead ends: 115 [2024-09-17 19:03:57,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:03:57,943 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:57,943 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:03:57,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-17 19:03:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-17 19:03:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 19:03:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-17 19:03:57,967 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-17 19:03:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:57,967 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-17 19:03:57,967 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:03:57,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-17 19:03:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-17 19:03:57,968 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:57,968 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:57,983 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 19:03:58,172 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:58,173 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:58,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-17 19:03:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:58,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718408877] [2024-09-17 19:03:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:58,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583164226] [2024-09-17 19:03:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:58,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:58,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:58,191 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:03:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:58,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 19:03:58,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-17 19:03:58,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-17 19:03:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718408877] [2024-09-17 19:03:58,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583164226] [2024-09-17 19:03:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583164226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:58,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:58,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-17 19:03:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198326837] [2024-09-17 19:03:58,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:58,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 19:03:58,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 19:03:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:03:58,789 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-17 19:03:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:59,289 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-17 19:03:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 19:03:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-17 19:03:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:59,291 INFO L225 Difference]: With dead ends: 168 [2024-09-17 19:03:59,291 INFO L226 Difference]: Without dead ends: 136 [2024-09-17 19:03:59,291 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:03:59,292 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:59,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 19:03:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-17 19:03:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-17 19:03:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-17 19:03:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-17 19:03:59,332 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-17 19:03:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:59,332 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-17 19:03:59,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-17 19:03:59,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-17 19:03:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-17 19:03:59,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:59,334 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:59,346 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 19:03:59,538 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:59,539 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:59,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-17 19:03:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748761686] [2024-09-17 19:03:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:59,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:03:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:03:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:03:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:03:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:03:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:03:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:03:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 19:03:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:03:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 19:03:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:03:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748761686] [2024-09-17 19:03:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748761686] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267422115] [2024-09-17 19:03:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:59,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:59,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:59,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:59,806 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 19:03:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:59,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-17 19:03:59,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:03:59,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:04:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267422115] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:00,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:04:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-17 19:04:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139824161] [2024-09-17 19:04:00,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:00,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 19:04:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 19:04:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:04:00,245 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-17 19:04:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:00,411 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-17 19:04:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 19:04:00,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-17 19:04:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:00,412 INFO L225 Difference]: With dead ends: 129 [2024-09-17 19:04:00,412 INFO L226 Difference]: Without dead ends: 100 [2024-09-17 19:04:00,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:04:00,413 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:00,413 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:04:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-17 19:04:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-17 19:04:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 19:04:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-17 19:04:00,432 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-17 19:04:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:00,432 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-17 19:04:00,432 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-17 19:04:00,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-17 19:04:00,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-17 19:04:00,433 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:00,433 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:00,448 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:00,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-17 19:04:00,637 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:00,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-17 19:04:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632251685] [2024-09-17 19:04:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:04:00,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235476591] [2024-09-17 19:04:00,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:04:00,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:00,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:00,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 19:04:00,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:04:00,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:00,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-17 19:04:00,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 19:04:01,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 19:04:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632251685] [2024-09-17 19:04:16,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:04:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235476591] [2024-09-17 19:04:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235476591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:16,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:04:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-17 19:04:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980114256] [2024-09-17 19:04:16,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:16,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-17 19:04:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-17 19:04:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-17 19:04:16,468 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-17 19:04:28,870 WARN L293 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 19:04:30,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:31,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:48,701 WARN L293 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 19:04:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:49,769 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-17 19:04:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-17 19:04:49,769 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-17 19:04:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:49,770 INFO L225 Difference]: With dead ends: 203 [2024-09-17 19:04:49,770 INFO L226 Difference]: Without dead ends: 170 [2024-09-17 19:04:49,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:04:49,771 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:49,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-09-17 19:04:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-17 19:04:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-17 19:04:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.183673469387755) internal successors, (116), 105 states have internal predecessors, (116), 51 states have call successors, (51), 17 states have call predecessors, (51), 16 states have return successors, (49), 43 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-17 19:04:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-17 19:04:49,837 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-17 19:04:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:49,837 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-17 19:04:49,837 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-17 19:04:49,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-17 19:04:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-17 19:04:49,839 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:49,839 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:49,852 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:50,039 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:50,040 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:50,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-17 19:04:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634338711] [2024-09-17 19:04:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:50,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:04:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527693956] [2024-09-17 19:04:50,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:04:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:50,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:50,079 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 19:04:50,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:04:50,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:50,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-17 19:04:50,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-17 19:04:50,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-17 19:04:53,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:53,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634338711] [2024-09-17 19:04:53,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:04:53,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527693956] [2024-09-17 19:04:53,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527693956] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:53,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:04:53,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-17 19:04:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156136057] [2024-09-17 19:04:53,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:53,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-17 19:04:53,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-17 19:04:53,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-17 19:04:53,537 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-17 19:04:57,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:58,189 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-17 19:04:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 19:04:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-17 19:04:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:58,194 INFO L225 Difference]: With dead ends: 246 [2024-09-17 19:04:58,194 INFO L226 Difference]: Without dead ends: 185 [2024-09-17 19:04:58,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-17 19:04:58,198 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:58,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-09-17 19:04:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-17 19:04:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-17 19:04:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 103 states have internal predecessors, (112), 47 states have call successors, (47), 18 states have call predecessors, (47), 17 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 19:04:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-17 19:04:58,295 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-17 19:04:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:58,296 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-17 19:04:58,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-17 19:04:58,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-17 19:04:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-17 19:04:58,300 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:58,300 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:58,313 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:58,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:58,502 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:58,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-17 19:04:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337680085] [2024-09-17 19:04:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:58,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:04:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:04:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:04:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:04:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:04:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:04:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:04:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:58,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:04:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:04:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:04:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:04:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:04:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:04:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-17 19:04:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 19:04:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 19:04:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-17 19:04:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-17 19:04:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 19:04:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337680085] [2024-09-17 19:04:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337680085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:04:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811838256] [2024-09-17 19:04:59,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:04:59,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:59,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:59,027 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 19:04:59,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:04:59,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:59,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-17 19:04:59,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-17 19:04:59,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:05:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-17 19:05:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811838256] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:05:00,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:05:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-17 19:05:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087849039] [2024-09-17 19:05:00,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:05:00,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 19:05:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:05:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 19:05:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-17 19:05:00,270 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-17 19:05:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:05:00,667 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-17 19:05:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 19:05:00,667 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-17 19:05:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:05:00,668 INFO L225 Difference]: With dead ends: 187 [2024-09-17 19:05:00,669 INFO L226 Difference]: Without dead ends: 145 [2024-09-17 19:05:00,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:05:00,669 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:05:00,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:05:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-17 19:05:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-17 19:05:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 89 states have internal predecessors, (96), 38 states have call successors, (38), 17 states have call predecessors, (38), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-17 19:05:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-17 19:05:00,728 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-17 19:05:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:05:00,728 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-17 19:05:00,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-17 19:05:00,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-17 19:05:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-17 19:05:00,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:05:00,733 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:05:00,746 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-17 19:05:00,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-17 19:05:00,934 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:05:00,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-17 19:05:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:05:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71873985] [2024-09-17 19:05:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:05:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:05:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:05:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:05:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:05:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:05:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:05:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:05:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:05:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:05:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:05:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:05:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:05:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:05:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:05:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 19:05:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 19:05:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 19:05:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 19:05:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-17 19:05:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 19:05:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 19:05:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:05:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:05:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71873985] [2024-09-17 19:05:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71873985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:05:01,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974674626] [2024-09-17 19:05:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:05:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:05:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:05:01,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:05:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 19:05:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:05:01,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:05:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:05:01,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:05:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:05:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974674626] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:05:01,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:05:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-17 19:05:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116366101] [2024-09-17 19:05:01,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:05:01,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 19:05:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:05:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 19:05:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:05:01,424 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 19:05:01,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:05:01,552 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-17 19:05:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:05:01,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-17 19:05:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:05:01,554 INFO L225 Difference]: With dead ends: 155 [2024-09-17 19:05:01,554 INFO L226 Difference]: Without dead ends: 148 [2024-09-17 19:05:01,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:05:01,555 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:05:01,556 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:05:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-17 19:05:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-17 19:05:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 93 states have internal predecessors, (100), 42 states have call successors, (42), 17 states have call predecessors, (42), 16 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-17 19:05:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-17 19:05:01,619 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-17 19:05:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:05:01,620 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-17 19:05:01,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 19:05:01,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-17 19:05:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-17 19:05:01,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:05:01,622 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:05:01,637 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-17 19:05:01,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-17 19:05:01,823 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:05:01,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:01,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-17 19:05:01,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:05:01,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959829494] [2024-09-17 19:05:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:05:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:05:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:05:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:05:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:05:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:05:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:05:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:05:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:05:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:05:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:05:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:05:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:05:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:05:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:05:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:01,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 19:05:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 19:05:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 19:05:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 19:05:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-17 19:05:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 19:05:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 19:05:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-17 19:05:02,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:05:02,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959829494] [2024-09-17 19:05:02,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959829494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:05:02,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007005140] [2024-09-17 19:05:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:05:02,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:05:02,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:05:02,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:05:02,032 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 19:05:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 19:05:02,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:05:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-17 19:05:02,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:05:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007005140] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:05:02,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:05:02,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-17 19:05:02,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447362735] [2024-09-17 19:05:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:05:02,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 19:05:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:05:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 19:05:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:05:02,187 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:05:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:05:02,317 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-17 19:05:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:05:02,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 123 [2024-09-17 19:05:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:05:02,319 INFO L225 Difference]: With dead ends: 190 [2024-09-17 19:05:02,319 INFO L226 Difference]: Without dead ends: 147 [2024-09-17 19:05:02,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:05:02,319 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:05:02,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:05:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-17 19:05:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-17 19:05:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 19:05:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-17 19:05:02,369 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-17 19:05:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:05:02,370 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-17 19:05:02,370 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:05:02,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-17 19:05:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-17 19:05:02,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:05:02,371 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:05:02,387 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-17 19:05:02,572 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-17 19:05:02,572 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:05:02,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-17 19:05:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:05:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735013247] [2024-09-17 19:05:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:05:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:05:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:05:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:05:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:05:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:05:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:05:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:05:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:05:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:05:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:05:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:05:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:05:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:05:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:05:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 19:05:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 19:05:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 19:05:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 19:05:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-17 19:05:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 19:05:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 19:05:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 19:05:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-17 19:05:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:05:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 52 proven. 45 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-17 19:05:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:05:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735013247] [2024-09-17 19:05:02,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735013247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:05:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870024648] [2024-09-17 19:05:02,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:05:02,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:05:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:05:03,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:05:03,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-17 19:05:03,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 19:05:03,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:05:03,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-17 19:05:03,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:05:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-17 19:05:03,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:05:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-17 19:05:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870024648] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:05:03,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:05:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 28 [2024-09-17 19:05:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930733747] [2024-09-17 19:05:03,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:05:03,374 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-17 19:05:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:05:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-17 19:05:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:05:03,375 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 14 states have call successors, (41), 4 states have call predecessors, (41), 3 states have return successors, (41), 15 states have call predecessors, (41), 12 states have call successors, (41) [2024-09-17 19:05:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:05:03,946 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2024-09-17 19:05:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-17 19:05:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 14 states have call successors, (41), 4 states have call predecessors, (41), 3 states have return successors, (41), 15 states have call predecessors, (41), 12 states have call successors, (41) Word has length 134 [2024-09-17 19:05:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:05:03,947 INFO L225 Difference]: With dead ends: 188 [2024-09-17 19:05:03,947 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:05:03,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=1269, Unknown=0, NotChecked=0, Total=1482 [2024-09-17 19:05:03,948 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 87 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:05:03,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 441 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:05:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:05:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:05:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:05:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:05:03,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-17 19:05:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:05:03,949 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:05:03,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 14 states have call successors, (41), 4 states have call predecessors, (41), 3 states have return successors, (41), 15 states have call predecessors, (41), 12 states have call successors, (41) [2024-09-17 19:05:03,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:05:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:05:03,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:05:03,952 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:05:03,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-17 19:05:04,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-17 19:05:04,159 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:05:04,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:05:05,753 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:05:05,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:05:05 BoogieIcfgContainer [2024-09-17 19:05:05,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:05:05,785 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 19:05:05,785 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 19:05:05,786 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 19:05:05,786 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:53" (3/4) ... [2024-09-17 19:05:05,790 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 19:05:05,837 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 19:05:05,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 19:05:05,838 INFO L158 Benchmark]: Toolchain (without parser) took 72602.59ms. Allocated memory was 163.6MB in the beginning and 408.9MB in the end (delta: 245.4MB). Free memory was 95.1MB in the beginning and 360.8MB in the end (delta: -265.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:05:05,839 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:05:05,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.34ms. Allocated memory is still 163.6MB. Free memory was 95.0MB in the beginning and 132.9MB in the end (delta: -37.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.69ms. Allocated memory is still 163.6MB. Free memory was 132.9MB in the beginning and 132.1MB in the end (delta: 806.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,840 INFO L158 Benchmark]: Boogie Preprocessor took 29.33ms. Allocated memory is still 163.6MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,840 INFO L158 Benchmark]: RCFGBuilder took 275.88ms. Allocated memory is still 163.6MB. Free memory was 130.0MB in the beginning and 116.2MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,840 INFO L158 Benchmark]: TraceAbstraction took 71973.21ms. Allocated memory was 163.6MB in the beginning and 408.9MB in the end (delta: 245.4MB). Free memory was 115.3MB in the beginning and 362.9MB in the end (delta: -247.6MB). Peak memory consumption was 230.1MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,840 INFO L158 Benchmark]: Witness Printer took 52.41ms. Allocated memory is still 408.9MB. Free memory was 362.9MB in the beginning and 360.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:05:05,842 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.34ms. Allocated memory is still 163.6MB. Free memory was 95.0MB in the beginning and 132.9MB in the end (delta: -37.9MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.69ms. Allocated memory is still 163.6MB. Free memory was 132.9MB in the beginning and 132.1MB in the end (delta: 806.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.33ms. Allocated memory is still 163.6MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.88ms. Allocated memory is still 163.6MB. Free memory was 130.0MB in the beginning and 116.2MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 71973.21ms. Allocated memory was 163.6MB in the beginning and 408.9MB in the end (delta: 245.4MB). Free memory was 115.3MB in the beginning and 362.9MB in the end (delta: -247.6MB). Peak memory consumption was 230.1MB. Max. memory is 16.1GB. * Witness Printer took 52.41ms. Allocated memory is still 408.9MB. Free memory was 362.9MB in the beginning and 360.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.3s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 40.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 375 SdHoareTripleChecker+Valid, 12.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 3366 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2774 mSDsCounter, 545 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3009 IncrementalHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 545 mSolverCounterUnsat, 592 mSDtfsCounter, 3009 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2133 GetRequests, 1913 SyntacticMatches, 10 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 34.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2460 ConstructedInterpolants, 0 QuantifiedInterpolants, 21831 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 10345/10991 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 1)) && (d == 4)) && (B == 1)) && (p == 4)) && (A <= 5))) || (((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (r <= 3)) && (p == 4))) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 1)) && (p == 2)) && (d == 2)) && (B == 1)) && (A <= 5))) || (((((((A == r) && (p == 8)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) && (A <= 5))) || (((((A == ((long long) r + 1)) && (d == 1)) && (B == 1)) && (q == 1)) && (p == 1))) || (((((((A == ((long long) q + r)) && (0 <= A)) && (r <= 5)) && (d == 1)) && (B == 1)) && (A <= 5)) && (p == 1))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((0 <= A) && (A == r)) && (r <= 5)) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1)) || (((((((A == r) && (p == 8)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) && (A <= 5))) || (((((((0 <= A) && (A == r)) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) && (A <= 5))) || (((((((A == r) && (d == 4)) && (r <= 5)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-17 19:05:05,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE